Centrifugal liquid-separator.



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FRANS OSKAR NILSSON, OF STOCKHOLM, SWEDEN.

CENTREFUGAL LIQUID=SEPARATORL SPECIFICATION forming part of LettersPatent No. 670327, datecl March 19, 1901.

Application filed June 13, 1899. Serial No. 720,*130. (No model.)

1'0 (LZZ whom it may conccrn:

Be it known that I, FRANS OSKAR NILssoN, a subject of the King of Swedenand Norway, and a resident of Stockholm, Sweden, have invented a new anduseful Improvementin Centrifugal Separator-Drums, of which the-following is a specification, reference being had to the drawings aecompanyingand forming a part hereof.

The present invention relates to an improvement ,in centrifugalSeparator-drums, more especially for the treatment of milk, and has forits purpose partly to effect a quick and efficient skimming and partlyto collect slimy substances and other impurities in the milk in such amanner that they can afterward be readily removed from the partitions.

The invention consists in the Construction and arrangement of partshereinafter described and claimed.

In the accompanying drawings, Figure l shows a vertical section of aSeparator-drum according to this invention. Fig. 2 shows a horizontalsection of the same, and Fig. 3 shows a horizontal section of amodification thereof. v

lnthe usual centrifugal vessel A there are superposed on one another anumber of rings B, forming a kind of perforated wall through which theskini-milk is forced out. The rings, which form the object of theinvention, are composed of one lower annular disk C, which is fiat, andone upper ring D, which is formed as the frustum of a cone, with thediierence that its periphery is provided with corrugations, preferablycommencing at the disk and increasing toward the edge, asseen in Figs. land 3. The periphery of the rings may eventually be corrugated in such amanner that a uniformly conical corrugated surface is produced, thebase-line of the cone having the appearance shown in Fig. 3. The upperedge of the ring may be finely beaded in order that the skim-milk may beforced out between these beadings and the flat part of the superposedring, while slime and the like Will accumulate at the inner walls of therings and adhere to them. These rings are inserted loosely on top of oneanother, either as shown in Fig. l or With the conical part downward,and are clamped together between a flexible bowl or dished disk E,located at the bottom of the centrifugal vessel, and an upper disk F,which by means of the ring G is pressed down on the rings by the upperpart of the centrifugal vessel. Lugs or projections H may be providedfor centering the rings. By the corrugations of the rings the result isgained that the crean which acconpanies the milk through the beadededges and which would be liable to accumulate on the outer sides of therings and after a short while act as a hindrauce to the passage of theskimmilk is conducted back into the centrifugal vessel by theoorrugations of the next ring above.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The combination with a centrifugal separator-drum, of a series ofrings superposed on one another, said rings consisting of a fiat annulardisk to the outer edge of which is fastened one edge of a conical ringprovided with transversal corrugations, substantially as and for thepurpose set forth.

2. The combination with a centrifugal sep-' arator-drun, of a series ofrings superposed on one another, said rings consisting of a fiat annulardisk to the outer edge of which is fastened one edge of a conical ringprovided with transversal corrugations, the free edge of said ring beingindented, substantially as and for the purpose set forth.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

FRANS OSKAR NILSSON. Witnesses:

GUSTAF TSFALT, GERDA LINDKVIsT.

